[PATCH] sleep: Fix oops in enter_state

If ACPI sleep is not configured, but someone still wants to run swsusp,
he'd get oops in enter_state.  This is regression since 2.6.14 and this
fixes it.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 18d7d693fbba852c48acc40de4ad8809baf5d36e..6ee2cad530e8971f4ad69da2f94d96455039fc5e 100644 (file)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -167,7 +167,7 @@ static int enter_state(suspend_state_t state)
 {
        int error;
 
-       if (pm_ops->valid && !pm_ops->valid(state))
+       if (pm_ops && pm_ops->valid && !pm_ops->valid(state))
                return -ENODEV;
        if (down_trylock(&pm_sem))
                return -EBUSY;